Similar arguments have been made against average speed cameras on UK motorways - “I’ll have to be entirely focused on the speedo the whole time!”. No, you just drive within the speed limit.
The speed limit is not a target.
If you stick at 40mph or thereabouts going into a 50mph zone, the examiner may think you haven't seen the speed limit change. More importantly, if you don't keep up a good pace on a clear country road with good visibility where the speed limit is 60mph, they won't have confidence in your riding at higher speeds, and they know - as all bikers know - that you will almost certainly spend a good chunk of your riding career at higher speeds on country roads.
I have seen advice to motorcyclists that they should be just a bit faster than most traffic. Slow enough to manage changes in traffic ahead, but fast enough that no one is approaching you from behind.
Of course, given that on two wheels, one is not as safe as on four (and also being enclosed in a metal frame). So, naturally the good riders will find ways to ride safely and that includes riding at appropriate speeds. The ones who aren't good/safe riders are not likely to ride for long.
Personally, I liked the idea put forward by one of the UK driver advocacy groups a long time ago. Speed enforcement measures should prioritise places with a dangerous hazard, and there should be prominent warning signs on approach in a standard format that show (a) the speed camera sign, (b) the current speed limit and (c) the nature of the hazard, so drivers understand why the limit is there and enforcement is visible and clearly justified.
Somehow, I suspect that if drivers had more trust that speed limits were being set appropriately and expected that they would actually be enforced where they most matter, they would become largely self-policing anyway. Then the actual road police could spend more time dealing with other problems like using a phone behind the wheel or drinking and driving, which are potentially more dangerous than most speeding but much more difficult to enforce without human intervention.
In suburban development especially, there is/was an initiative to make roads safer by increasing the physical tolerances relative to the posted limits. So you have all these residential neighborhoods with big gentle corners in them that any drunk idiot in a shitbox could easily handle at 60mph. And that is exactly what happens.
If 30mph is too fast for a pedestrian encounter, then 30mph needs to feel too fast for maintaining control / avoiding obstacles.
Many American highways actually increase the length and size of the road markings in order to make speed feel slower than it actually is, which was likely a comfort thing at first but clearly it hides the present danger of speed.
That said, it's also important to use these design techniques for clear reasons. Some people don't like motor vehicles and want to deter their use for reasons other than safety. They have been known to argue for road designs that limit capacity or force traffic to go very slowly as a deterrent measure, when perhaps a road designed to support faster speeds could have been just as safe and allowed a more efficient transport system. Sometimes, they even argue for measures that would likely be counterproductive given their stated goals, possibly without understanding why that would be the result. So before you can design a road, you first need to establish what your requirements are and what you're trying to achieve, which is more of a political question than an engineering one.
Platitudes like this and the evergreen "speed kills" can themselves be dangerous.
Obviously driving at the speed limit all the time is not a legal requirement and there will be times when driving slower is appropriate. However, driving far slower than the speed limit for no good reason when there is other traffic around can itself increase the risk of something bad happening, because you won't be keeping up with the flow of traffic and behaving as other drivers will expect.
In the Uk, if you are incapable of handling your car on a highway with other vehicles driving 12mph slower than the limit, then you are incapable of driving on highways - some vehicles e.g. HGVs are restricted to these lower speeds.
This rule of thumb means I really don't have to waste any mental energy keeping an eye out for police, since someone else is almost always going faster and I find it doesn't significantly impact my trip times since traffic and stop lights tend to cancel out most potential gains from driving any faster.
Sure, I use it on the freeway, but only on long drives. I've never seen anyone use it in the city.
Yes, it's great, especially if you have adaptive CC.
Foot resting on the break pedal, ready to react. Cruise control to do 80% of speed adjustments.
Never heard of a speed limiter. As you can probably tell from the "freedom units," I'm from the US if that matters.
The cruise control has a switch to change to limiter, I rarely use that.